Window mounted air conditioning unit



1954 c. D. HARRIS ETAL WINDOW MOUNTED AIR CONDITIONING UNIT Filed Jan. 22, 1952 3 Sheets-Sheet l barks .2! 0742771? [(370.96 5 d. fi'alazzz' Feb 1954 c. D. HARRIS ET AL 2,667,765

WINDOW MOUNTED AIR CONDITIONING UNIT Filed Jan. 22, 1952 3 Sheets-Sheet 2 (ZarZes .3. Marv-1's lfos e v/i Galazzz' PQJJQ O M Mzi gr.

1 4 c. D. HARRIS ET AL 2 ,667,765

WINDOW MOUNTED AIR CONDITIONING UNIT Filed Jan. 22, 1952 s Sheets-Sheet 3 gag/e7? 'alazzz' Patented Feb. 2, 1954 WINDOW' M'oUNTigl i if li' CUNDITIONING' Charles I). Harris and- Joseph A. Galazzn. Evans.-

ville Ind:,. aSSiQIOI'S to International Harvester Company. a corporation of' New Jersey Application January 22, 1952, Serial. No. 2671542" This invention relates generally toan air conditiom'ng system and more particularly to a room air conditioner whichmounted outside a room window; The conventional type of window mounted air conditioner is generally secured to a window sill with the high side compartment" disposed, outside the window and the lowside compartment projecting through the window" into the room. Such units are objectionable to most" owners in that they obstruct a considerable portion of the window and prevent complete closure of the window sash. Furthermore, since a good portion of the noise making mechanism is within the air" conditioned space, it is diflicult to prevent this noise entering' the room being cooled. For this reason they are usually removed from the window during, the winter" months and then replaced for the hot summer months; These units are difiicult to install" in: a; casement type window since a considerable portion of the frame and glass must be removed from the window in order to provide a; place for the" unit. The present. in vention provides" a window mounted room air conditioner which overcomes'these disadvantages.

One object of the present inventionis to" pro.- vide an air conditioning unit. which is adapted to: be mounted in adouble. hung sash type window and also ina' casement type window.

-Another object of'the invention is to provide an air conditioning, unit which is secured to a window sill of a room: to. be conditioned with the entire. unit disposed exteriorly' of the room.

Anotherv object of the invention is to provide a window mounted air' conditioner" unit. so positioned' in relation to the lower sash of a. double hung sash type window that the" sash may be completely closed without removing. the unit.

Another object of the invention is to provide an air conditioning; unit which can be easily mounted in a casement" type. window upon removal of only one pane of glass'from the window. Another object of. the invention is to provide a window type air conditioner so" located that a minimum amount of operating noise: from. the refrigeration system and air; circulating means will be projected into the. room being: condition'ed. Another object of the invention is to provide a. room air conditioner having a condenser so located that outsideair may heconveniently circulated thereoverso as to'provi'deexcellent cooling thereof. I

Another object of the invention is to provide an outside mounted air conditioner which may be permanently" installed for year around oper ation.

Another object of the invention is to providea room air conditioner having a cabinet of such size that the refrigeration system andassociated parts are located therein without overcrowding:

Another object of the invention is toprovide a window mounted" air conditioner with means.

for effectively removing moisture eondenses on the" evaporator.

Another object of the inventionis to provide a room air conditionenwith damper means which may be selectively set torecirculate room air ove the evaporator, or to" evacuate air from the room, or to circulate airf-ronr outdoors oversalii evaporator;

With these and numerous other-"objects ix'r view; the invention consists in the novel features of construction, combination and arrangement of parts as will be hereinafter! referred to and" more particularly pointed; out in the specification and claims.

In the accompanying drawing 'forming. a. part of this application:

Fig. 1 is a perspective view' of air air condition: ing unit mounted outside a-douhle hungs'asirtype window r Fig. 2"is an enlarged" vertical sectional viewed the unit of Fig.

Fig; 3 is a hori'zontat sectional viewitalten-along line 3 '-3 of Fig; 2.

Fig. 4'- isa horizontal sectional view takenalo'n line 4-4 of Fig: 21

Fig. 5 is an elevational- View of the lower por tion of the inner window casing showing? the unit mounted therein with the grille removed therefrom.

Fig. 6= isa perspective'view of. the air" condittioning unit mounted outside a casement window.

Fig. 7 is an elevational viewof the lower portion of theinnerwindow casing of Fig. 6? showing the unit mounted therein. I

Fig. 8 1s an enlarged} sectional view taken along. line 8-4! ofFig. 71

Fig. 7 9 is an elevational' view of the lower por tion of the inner window casing of Fig. 6 show;- ing the unit, mounted" therein the grille removed.

Fig. 10 is" a cross sectional view taken" along line Ill--10 of Fig. 9

Referring to the drawings for adetailed description of the invention; a portiorr of an outer wall H! of a buiIding-having a conventional douitle hung sash tvpewindow H is shown in -Fier I An air conditioning unit I 2 is secured on the outer surface of the wall In with the upper portion thereof projecting into the window The outer wall In comprises spaced apart inner member l3 and outer member l4 with any suitable matter l5 disposed therebetween. The window comprises a window casing I6 and a lower sash I] having a window pane l8 secured therein. The sash I1 is slidably secured in the casing IS in order that it may be raised and lowered.

The air conditioning unit |2 comprises an outer casing l9 having a generally rectangular shaped vertically disposed body portion and a horizontally disposed duct or elbow section 2| extending from the upper portion of the casing. Vertical extending channel members 22 are disposed in each corner of the casing l9 to whichv are attached the front wall 23, side wall 24, rear wall 25, side wall 26 and top wall 21 of the casing. Elbow section 2| comprises a side wall 28, bottom wall 29, side wall 30 and the top wall 21 which terminate in bent-in edge portions 3|, 32, 33 and 34 respectively. L-shaped channel memhere 35 are positioned proximate to the vertical sides of the window casing |5 with one leg secured thereto by screws 35 and the other leg extending at right angles thereto. A top support member 31 and a bottom support member 33 are secured to the extending legs of the channels 35 and extend across the width of the window casing IS. The inturned edges 32 and 34 of the elbow section 2| are secured to the support mem hers-3'! and 38 by bolts 39. The channels 35, support members 31 and 38 and the casing is are all disposed in spaced relationship to the window sash H as seen in Fig. 2 so that it can be raised and lowered completely. A resilient member 40 is attached to the sash frame I! whereby it will shield the space between the sash H and the top wall 21 when the sash I! is raised as seen in Fig. '2, and will flex upwardly when the sash I! is lowered. Two angle members 4| and 42 arebolted to the lowerportion of the rear wall 25 with their ends abutting the outer member |3 of wall |0 whereby the casing I9 is held in spaced relationship to the wall I.

The casing I9 i divided into a high side compartment 43 and a low side compartment 44 by a horizontally disposed partition 45." Two transversely extending channels 45 and 4'? are located in the lower portion of the casing l9 and are secured to two cross members 48 and 49, the ends of which are secured to the corner channel members 22 by welding or the like. The lower end 50 of easing H: is open and a finned tube condenser 5 |-.:is-positioned across the open end 50 and fastened to the channel members 43 and 41. A hermetically' sealed motor-compressor assembly 52 is positioned above the channel members 45 and 41 and secured thereto by resilient mounts 53. A rectangular shaped tray 54 is secured to the fiat-top ofthemotor-compressor unit 52 in heat exchange relation thereto. A serpentine shaped coil |05 is disposed within the tray 54 and is held in heat exchange relation with the bottom of the tray in any suitable manner. An electric motor 55, havinga double end armature shaft .5 5ris fastened to partition 45 by brackets 51. The upper end 58 of the shaft 56 extends through partition 45 whereas the lower end 59 extends below the motor and is provided with a propeller type fan 50. A rectangular shaped bafiie BI is secured to the wallsof the casing l9 and is provided with a circular opening 52 which surun ihe,b d t si the f e 9- ..The f o wall 23 and side walls 24 and 26 are provided with louvers 63 through which air being circulated by fan will be expelled.

v Low side compartment 44 is divided into an inlet passageway 54 and an outlet passageway 65 by a partition 65. The walls of the low side compartment 44 are covered by an insulating material 67 which reduces the amount of heat transfer therethrough. Upper end 58 of the motor shaft 55 extends upwardly through a circular opening 58 provided in partition 55 and a centrifugal type fan 69 is mounted on the shaft 56 adjacent opening 68. The fan 69 is encased by auhousing 10 which has an outlet opening H directed into outlet passageway 65. A finned tube evaporator 12 extends across the outlet passageway 65 and is secured over a pan 73 which rests upon partition 56. Pan 13 is connected to tray 54 by a drain tube 14 having the upper end thereof connected into pan l3 and the lower end positioned over tray 54. A filter element 15 is disposed in front of evaporator 12 for the purpose of filtering air which flows therethrough. A grille member 13 is fastened to elbow section 2| and is provided with lower louvers TI and upper louvers 18 for the purpose of directing air streams into inlet passageway 54 and directing air streams from the outlet passageway 55 into the interior of the room. As seen in Fig. 3, the width of the casing I9 is substantially less than window Ii. Bafiie or filler elements 19 are positioned on each side of the casing in alignment with grille 16 in order to close the open spaces between the casing l9 and the window casing Hi. The filler elements 19 and grille element 16 could be constructed as one unit if desired.

The motor-compressor unit 52 is energized by a suitable power supply (not shown) and operates to compress a suitable refrigerant when energized. This compressed refrigerant is conveyed by conduit 86 to tray 'coil Hi5, then through conduit 8| to condenser 5|. As the refrigerant flows through condenser 5| it will be cooled and condensed, after which it is metered into evaporator i2 by a restrictor tube 82.- The refrigerant is heated and vaporized during its journey through the evaporator'lZ and is then returned by conduit 83 to the intake of the motor-compressor unit 52 from where it will again be recompressed and forwarded through the refrigeration system.

During the operation of the refrigeration systern, fan motor 55 will also be energized in order to rotate fan50 andfan 69. Fan 50 will pull outside air upwardly from open end 50 through the high side compartment 43 and then exhaust it through louvers 53. As the air moves through the compartment 43, it wipes over the finned surfaces of condenser 5| and cools the hot refrigerant flowing therethrough. It then passes over the motor-compressor unit 52 and removes heat therefrom so that the temperature thereof is maintained within a proper operating range. The bafiie 6| prevents reverse flow of air around the fan 64 and assures a steady stream of cooling air through the compartment 43.

Blower fan 59 will create a low pressure within inlet passageway 64 during its operation, whereby room air will be sucked from the lower portion of the room through louvers. ll into inlet passageway 64. This air will then be forced through housing 10 into outlet passageway 65, then through filter i5 into contact with evaporator 12. Upon contact of the cold surfaces of the evaporator]: the air will be cooled and some of the moisture: carried therebys'will libel condensed-en theievaporatorifromrwhieh itfwill'idrain intofl'pan 13. Tube M will .iconvey 'thez. condensate-from the iparrilib intol trayzfili where it :will contact-the coilil 05. smoeitheitemp'eraturei of coil i 65 i will be:quiteihigh;ithev condensate-will be heated to a vapor" and-this vapoifiwill be pioleed up by the air streamiiereated byw fan st: altar-expelled through lowzersr $31 After theLair within outlet'rpassage way wehas beemcoolect andrdehumidifiedrby evaporator :1 2 it is :forced through outletlouvers' '13 intozthe zuppertportionof the: room;

Inletipassageway 'fi' r is' provided' with a rec-tam gularropeningrin side wall:- 2lI- and a damper M re securedxtherein. by-rhinges em A rod. 86: connects tIYe damper-B l to' a knob o1 so-thatvthe damper 84 may be rotated about hinges ilfito open posi tion by: pushing knob 8? inwardly. t oatlet passagewayiii is provided" with-a rectangular: open= ing in side wall 28: in which 'a' damper as is se curedrby hinges: 82'. A :second knob" flfl 'is 7 com nectedi to dampermlr by a rod =91 f whereby the dampen so maybe :rotatedto 'open position by movin'gikn'ob winwardlys suitable controls-Knot shown maybe-providedfor-controlling th'e' op' eration :of motor compressor' unit 52 anoh'fari motor- 55in order 'that the fan motor 55 inay be operated alone; orf'the' fan: motor'55' and motorcompressor-unit- 52 may be -operatedsimultaneously;

When' 'the room air is to" c cooled and tie humidifled-, dampers 84 and 88 are closed and fan motor 55 and motor-compressor unit ez' are'energized whereby the system operatesin themanner explained"- heretoforer: By: opening 'dampewtifi outside air is f pulled into-inlet passageway -64 and mixed with the' roomair being pulld'throngh lumen; 12'; If only circulation of room air is desired fan: 'motor ii alone *is energized 'and dampers'M- and- 88' are both-closed? To' force fresh 'airintoth'e room; daiocper 84 is opened and damper'fia is closed? To remove stale air from the ro'omydamper 88 is opened and damper '81? is closed; By this arr'a'ngeniemi; the" roomf-airwill beprOperly conditioned bythe 'unit 12-.

Figs. 6-10 of the drawing sh'oWs'h casement typewindow arm which the unit I2 is installed: Thewin'dow 92 comprises a window e'zasin'g a frame 94 and individifal wintlow' panes The elbow section 2 l ofvasine I 9- is eonst'ructe'd with an: outside dimensioresulcistantially th -same as a window pane of'a conventional casementtype window.

In the modification ishown?in=-' Figs? 6401 a centrally located" lower window pane has been removed-'from' the frame'fifl and thennit l2' is positioned. outsideth'e' window with th intu rned edgei portionswit I"; 32", 33" and- 34 located adjacent to's theiframe S4. 1 Fasteningmembers s'ij areas and BQYarerthen Iapp'ed over t'he'inner edgesot fram'e194 ancrsecure'drto:the inturned edges i'fl' 32';v and: 34 respeetively by loolts I fill. Ifneetled; sp'aeeramembersi" I M maybe'inserted between the fastening members an theunturnededge por tions; A grille member iu2 is' *the'n "fastened over. the fastening members with intake-leavers" I [13 and outlet loiiversl 04" positioned therein? From the" foregoing it can be" seen that an air conditioning unit is provided" which can be easily and quickly installed" outside a room 'winiiow: This unitcan bein'stalled in either a doubleming" saslrv type window or" a casement type'windoivr' The duct which *extend'sinto the window isof small size so: that it 'will' obstruct-"chivasmall portion of th window- Since the"'unit""is"dis posed: outsidei-the roomsit :willimt :obstructrany floorispacerand thermachineryrisiar enoughzramovedfromthe-roomethatthebheatxandioperatmg n'oisegeneratedsrthereby williilbe'ainsulatedx from the room; The outer-- casing of the unit lie-constructed with a -large cross? sectional 1 area; in order to prevent crowding of lthe machinery- 2nd high: resistance to air oirculation therethrough. By providing" a weather resistance: outer? casing, the -unitmay be 'retained in operating==position throughout the year;

While the invention: has been describedwvith some detai-lfit is' to -be understood-that thedescription is ifor the purpose of illustration only andis "not definitive-of the-limits of-theinventive idea. 'l'he righti's' reserved to make such changes in the A details of "construction" and" arrangement of ioarts as" will fall 'with'in the 'purviewoF- the attachedclaimsz I What is claimed is:- 1. Ina 'unitfor 'conditioning" room" airi the' combination" ofa cabinet secured *to-the'mutr surface of a building wall adjacenta *window which opens intoa room; a partition ior'dividing' the-cabinet -into a low side compartment and a high side compartment; said cabinet-=beingpro vided with a projection which extends into said window and terminates adj-aoent'theoutersuw face of a windowpane; said' projection beingpro rided with an "opening whie-h connectssaid row sidecompartment to said roomya wall member for dividingsaid-lbw side compartment andt'hrojection into an air inlet pa'ssageway andf'arr air outlet passagewayyfa'n means'for pulling room air through said opening, "ciroulating-theair through said inlet passagewayand said 'bufiIt passageway; and then" returning it Fto saidroom through said opening; an "evaporator'dispnsedf across said 'out-letpassageway whereby the air circulating thereth'r'oughwill' be cooled;- a first opening provided in" said" cabinetwhich' connects said inlet passagewayto outside air 'valve' means foi' opening and"closing'said'firstopening'r a sea ond"'op'ening provided in said cadoinet-between said evaporator and' saidinlet passageway which connects said "outlet'passageway tooutside air and valve" means for-opening and closing-said second opening: '5

2'. "IDIE unit "for conditioning room""'air;'the' coir1bin'atioi'1- ofa cabinet comprisinga horizon tal' sectiomand" 'a' vertical section: said cabinet being secured" withsaidvertiea'l section adjacent thoutersurfaoeoiia building'wall and th'ehori zontahsectio'n 'extendingdnto a window which opensnnto a roomr'a partition fordividingsaid cabinetinto an upper cornpartment and a lower compartment; said horizontal section connecting said upper compartment to said room an" evap oratordisposed within' said uppencompartrnent" first'ian means for-circulating room air through" said horizont-al section into' "contact" with said evaporator; a condenser mounted"within said lower compartmentr second fanmeansfor circula'ting outside air into" contact with said con densery and an electricinotorsecuredwithin said 10m oompartmenvwhi'ch drives" said "first mnmeansandsaid second fan means. 1

39111 a unitfo'r conditioningroom air, the cmnbination of a cabinet comprising a 'horizon talse'cti'on and? a vertical section"; said cabinet" beingpositioned A with said vertical section 'adia?" cent-theoutersm'faeof building" wall another hdrizontalisection extending-into? window which opensin'toa roorntapartitionfoi di yidingf s cabinet intoazrupper compartment anu-aiower compartment; said horizontal section connecting said upper compartment to said room; an evaporator disposed within said upper compartment; a condenser and compressor mounted within said lower compartment; an electric motor positioned in said lower compartment and secured to said partition; said motor leaving a vertical disposed double end shaft; first fan means positioned in said lower compartment and secured to the lower .end of said shaft; and second fan means positioned in said upper compartment and secured to the other end of said shaft.

4. In a unit for conditioning room air, the combination of a cabinet comprising a horizontal section and a vertical section; said cabinet being positioned with said vertical section adjacent the outer surface of a building wall and the horizontal section extending into awindow which opens into a room; a partition for dividing said cabinet into an upper compartment and a lower compartment; said horizontal section connecting said upper compartment to said room; means for dividing said upper compartment into an inlet passageway and outlet passageway; an evaporator positioned across said outlet passageway; first fan means positioned between said inlet passageway and said outlet passageway for circulating room air therethrough into contact with said evaporator; said lower compartment being provided with an air inlet in the bottom thereof and air outlets in the sides thereof; a condenser positioned in said lower compartment across said air inlet; and second fan means positioned in said lower compartment which operates to circulate outside air upwardly through said air inlet and out said air outlets.

5. In a unit for conditioning room air, the combination of a cabinet comprising a horizontal section and a vertical section; said cabinet being positioned with said vertical section adjacent the outer surface of a building wall and the horizontal section extending into a window which opens into a room; a partition for dividing said cabinet into an upper compartment and a lower compartment; said horizontal section connecting said upper compartment to said room; means for dividing said upper compartment into an inlet passageway and outlet passageway; an evaporator positioned across said outlet passageway; first fan means positioned between said inlet passageway and said outlet passageway for circulating room air therethrough into contact with said evaporator; said lower compartment being provided with an air inlet in the bottom thereof and air outlets in the sides thereof; a condenser positioned in said lower compartment across said air inlet; second fan means positioned in said lower compartment which operates to circulate outside air upwardly through said air inlet and out said air outlets; and motor means located in said lower compartment for driving said first fan means and said second fan means.

6. In a unit for conditioning room air, the combination of a cabinet comprising a horizontal section and a vertical section; said cabinet being positioned with said vertical section adjacent the outer surface of a buildingwall and the horizontal section extending into a Window which opens into a room; a partition for dividing said cabinet into an upper compartment and a lower compartment; said horizontal section connecting said upper compartment to said room; means for dividing. said upper compartment into an inlet passageway and outlet passageway; evaporator positioned across said outletpassageway; first fan means posi+ tioned between said inlet passageway and said outlet passageway for circulating room air therethrough into contact with said evaporator; said lower compartment being provided with an air inlet in the bottom thereof and air outlets in the sides thereof; a condenser positioned in said lower compartment across said air inlet; second fan means positioned in said lower compartment which operates to circulate outside air upwardly through said air inlet and outsaid air outlets; a compressor secured in said lower compartment above said condenser; a coil connected between said compressor and said condenser; and means for collecting water which condenses on said evaporator and passing it into contact with said coil.

7. In a unit for conditioning room air, the combination of a cabinet comprising a horizontal section and a vertical section; said cabinet being positioned with said vertical section adjacent the outer surface of a building wall and the horizontal section extending into a window which opens into a room; a partition for dividing said cabinet into an upper compartment and a lower compartment; said horizontal section connecting said upper compartment to said room; means for dividing said upper compartment into an inlet passageway and outlet passageway; an evaporator positioned across said outlet passages way; first fan means positioned between said inlet passageway and said outlet passageway for circulating room air therethrough into contact with said evaporator; said lower compartment being provided with an air inlet in the bottom thereof and air outlets in the sides thereof; a condenser positioned in said lower compartment across said air inlet; second fan means positioned in said lower compartment which operates to circulate outside air upwardly through said air inlet and out said air outlets; a compressor secured in' said lower compartment above said condenser; a coil connected between said compressor and said condenser; means for collecting water which condenses on said evaporator and passing it into contact with said coil; and motor means located in said lower compartment for driving said first fan means and said second fan means.

8. In a unit for conditioning room air, a cabinet secured to the outside of a building adjacent a window thereof, a low side compartment disposed within the upper portion of said cabinet; a duct formed as an extension of said cabinet and connecting said low side compartment to said window, a wall disposed within and dividing said low side compartment and saidduct into-an air inlet passageway and an-air outlet passageway, an opening in said wall at the end opposite from said window, a fan mounted in cooperation with said opening where-' through one wall of said cabinet, the first of said vents positioned within said inlet passageway between said duct and said opening in said wall, the second of said vents positioned between said evaporator and said opening in said wall, doormeans mounted to one side of said first vent within said inlet passageway and selectively co operating therewith in varying degrees for closing said first vent and for opening said inlet passageway in varying degrees, second door means mounted to one side of said second vent within said outlet passageway and selectively cooperating therewith in varying degrees for closing said second vent and for opening said outlet passageway in varying degrees, so that varying amounts of the air without the building are drawn into said inlet passageway, and so that varying amounts of the air from said building are exhausted directly into the outside air through the outlet passageway.

CHARLES D. HARRIS.

JOSEPH A. GALAZZI.

References Cited in the file 01' this patent Number UNITED STATES PATENTS Name Date Jewell Apr. 23, 1940 Kalisoher Oct. 21, 1941 Philipp Mar. 30, 1943 Williams June 29, 1943 Guthrie Nov. 2, 1943 Cohler June 14, 1949 Eberhart Aug. 15, 1950 

